JP4963484B2 - Seismic reinforcement brackets and mounting methods - Google Patents
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- 230000000630 rising effect Effects 0.000 claims description 5
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- 238000010276 construction Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
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- 238000009434 installation Methods 0.000 description 3
- 230000000452 restraining effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
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- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
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- 238000010422 painting Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009419 refurbishment Methods 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
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Description
この発明は、例えば大空間などの既存建物の、在来工法による軽量鉄骨造の天井下地構造に耐震性能を付与することができ、また新築建物の天井下地構造の耐震補強としても適用可能な天井下地材の耐震補強金具及び耐震補強金具の取付方法に関するものである。 The present invention can impart seismic performance to a light steel frame ceiling foundation structure by a conventional construction method in an existing building such as a large space, and can also be applied as an earthquake resistance reinforcement of a ceiling foundation structure of a new building. The present invention relates to a base material seismic reinforcement bracket and a method of attaching the seismic reinforcement bracket.
天井下地構造では、図１５に示すように、体育館等の天井耐震補強の例として、野縁１００と野縁受１０２の交差部で、野縁１００と野縁受１０２に係合しているだけの固定度の低いクリップ１０１の弱点に着目して、クリップ自体を野縁受１０２に補強ビス１０３で直接ビス止めしたり、図１６に示すように、野縁１００と野縁受１０２の間に補強金物１１１をあてがい、補強金物１１１をビス１１２によって野縁１００に固定し、ビス１１３によって野縁受１０２に固定し、野縁１００と野縁受１０２の交差部を補強する方法がある。 In the ceiling foundation structure, as shown in FIG. 15, as an example of ceiling seismic reinforcement for a gymnasium or the like, only the field edge 100 and the field edge receiver 102 are engaged at the intersection of the field edge 100 and the field edge receiver 102. Paying attention to the weak point of the clip 101 with a low degree of fixation, the clip itself is directly screwed to the field receiver 102 with the reinforcing screw 103, or between the field edge 100 and the field receiver 102 as shown in FIG. There is a method in which the reinforcement hardware 111 is applied, the reinforcement hardware 111 is fixed to the field edge 100 with a screw 112, and is fixed to the field edge receiver 102 with a screw 113, and the intersection of the field edge 100 and the field edge receiver 102 is reinforced.
また、図１７に示すように、野縁１００と野縁受１０１の交差部で、耐風型天井補強用に開発された一対の耐風型補強クリップ１２０を用い、この一対の耐風型補強クリップ１２０をボルト１２１で固定して二重のクリップで挟持することで補強する方法もある。 In addition, as shown in FIG. 17, a pair of wind-resistant reinforcing clips 120 developed for wind-resistant ceiling reinforcement are used at the intersection between the field edge 100 and the field edge receiver 101, and the pair of wind-resistant reinforcing clips 120 are used. There is also a method of reinforcing by fixing with bolts 121 and sandwiching with double clips.
さらに、天井内に耐震用の斜めブレースを設置する装置として、例えば、図１８に示すものが公開されているが、斜めブレース１３１の下端部は、吊りボルト１３２の下部、天井下地材を吊持するハンガー１３０の上部１３３に設置されていることが多い（特許文献１）。
ここで、図１５及び図１６に示すものでは、単にプレート材で補強するだけであるため多数箇所への設置が必要となるが、地震時にどれ程の効果を発揮するかは定かではなく、しかも既存の天井改修工事では、天井面に接近した体勢でのビス止め作業が天井全面で必要となることから、そのために足場設備も広範囲に必要になるなど、仮設費や施工手間が多大となる。 Here, the ones shown in FIGS. 15 and 16 need only be reinforced with a plate material, so it is necessary to install them at a number of locations. In the existing ceiling repair work, screw fixing work with a posture close to the ceiling surface is required on the entire ceiling surface, which requires a large amount of temporary facilities and construction labor, such as requiring a wide range of scaffolding facilities.
また、図１７に示すものでは、特別仕様の一対の耐風型補強クリップ１２０を使用しているものの野縁１００と野縁受１０１の交差部での補強は十分ではなく、特別仕様であるため従来品との混在使用が出来ず全て特別仕様としなければならないため不経済となる。図１８に示すものでは、ハンガー１３０に集中して大きなせん断力が働き、ハンガー１３０が滑りあるいは変形して損傷する可能性がある。 Further, in the case shown in FIG. 17, although a pair of wind-resistant reinforcing clips 120 having a special specification is used, the reinforcement at the intersection of the field edge 100 and the field edge receiver 101 is not sufficient and is a special specification because it is a special specification. It is uneconomical because it cannot be used in combination with products and must be specially made. In the case shown in FIG. 18, a large shearing force acts on the hanger 130, and the hanger 130 may be slipped or deformed to be damaged.
このような類似工法のそれぞれ、または組み合わせで耐震補強工事が計画されるが、既存天井の改修では天井の全面改修が必要となったり、在来天井下地の耐震安全性を解決するに至ってない。 Seismic reinforcement work is planned for each or a combination of these similar methods, but renovation of the existing ceiling does not require a full refurbishment of the ceiling or the seismic safety of the conventional ceiling foundation has not been solved.
さらに、在来の天井下地材に水平地震力を抑える斜めブレースを設置する取付方法は色々と提案されているが、地震力が作用した場合に斜めブレースや吊ボルトに圧縮力が作用して座屈してしまうことや、ブレース下端（天井下地側）をハンガー直上や野縁受へ接続する取付方法では、水平分力による吊ボルトの曲げ変形やハンガーの曲がり、野縁受の倒れ変形が発生するために、ブレース設置による下地材への悪影響が天井損傷に繋がることが判ってきている。 In addition, various installation methods have been proposed for installing diagonal braces to suppress horizontal seismic force on conventional ceiling base materials, but when seismic force is applied, the compression force acts on the diagonal braces and suspension bolts. In the mounting method where the brace is bent or the brace lower end (ceiling base side) is connected directly to the hanger or to the field guard, the suspension bolt bends and the hanger bends due to the horizontal component force, and the field guard collapses. Therefore, it has been found that the adverse effect on the base material due to the installation of the braces leads to the ceiling damage.
この発明は、かかる点に鑑みなされたもので、天井下地の野縁と野縁受の交差部に設置し、地震に対して補強すると共に、衝撃力を吸収して耐震性能を付与することが可能な耐震補強金具及び耐震補強金具の取付方法を提供することを目的としている。 The present invention has been made in view of the above points, and is installed at the intersection of the field edge of the ceiling base and the field edge, to reinforce against the earthquake and to absorb the impact force and to provide the earthquake resistance performance. The object is to provide a possible seismic reinforcement bracket and a method of attaching the seismic reinforcement bracket.
前記課題を解決し、かつ目的を達成するために、この発明は、以下のように構成した。 In order to solve the above-described problems and achieve the object, the present invention is configured as follows.
請求項１に記載の発明は、天井スラブまたは梁を含む建物の構造体から吊持された野縁及び野縁受を備える天井下地構造を前記野縁と前記野縁受の交差部で補強する耐震補強金具であって、
前記野縁受に取り付けられる第１の金具と、前記野縁に取り付けられる第２の金具と、により構成され、
第１の金具は、前記野縁受に跨るように配置して前記野縁に嵌合させ、地震による前記天井下地構造に生じる衝撃力に対して前記野縁受の軸方向に変位可能に取り付け、
前記第２の金具は、前記野縁の野縁リップ部を挟み、かつ前記第１の金具に跨るように配置して前記野縁の野縁リップ部に地震による前記天井下地構造に生じる衝撃力に対して
前記野縁の軸方向に変位可能に取り付け、
前記天井下地構造に生じる衝撃力を吸収可能に構成したことを特徴とする耐震補強金具である。
The invention according to claim 1 reinforces a ceiling foundation structure including a field edge and a field edge suspended from a structure of a building including a ceiling slab or a beam at an intersection of the field edge and the field edge. A seismic reinforcement bracket,
A first metal fitting attached to the field edge receiver, and a second metal fitting attached to the field edge,
The first metal fitting is disposed so as to straddle the field edge and is fitted to the field edge, and is attached so as to be displaceable in the axial direction of the field edge with respect to an impact force generated in the ceiling foundation structure due to an earthquake. ,
The second metal fitting is arranged so as to sandwich the field edge lip portion of the field edge and straddle the first metal fitting, and an impact force generated in the ceiling base structure due to an earthquake at the field edge lip portion of the field edge. With respect to the axial direction of the field edge is attached to be displaceable,
An earthquake-resistant reinforcing metal fitting configured to be able to absorb an impact force generated in the ceiling base structure.
請求項２に記載の発明は、前記第１の金具は、前記野縁受の水平幅に嵌合するように板材の中央部を略コの字型に折曲げ、前記野縁受を挟み込んで、前記板材の下端部に形成した切欠きを前記野縁に嵌合して保持し、野縁受取付用ボルトを前記板材に螺着してボルト先端を前記野縁受に当接して締め付け、
前記第２の金具は、前記第１の金具に跨るように形成した略コの字型であり、両側部に折曲げリブを有する止め板材と、前記第１の金具に跨るように形成した略コの字型であり、端部がレ型に折曲げられた取付板材と、それらを貫通する複数の野縁リップ部取付ボルトと、を有し、
前記止め板材と前記取付板材とを、前記野縁の片側の野縁リップ部を挟み、かつ前記第１の金具の前記板材に跨るように配置し、
前記板材を跨ぐ両側において、前記野縁の片側の野縁リップ部に前記取付板材のレ型端部を引っ掛け、前記止め板材と前記取付板材とを前記複数の野縁リップ部取付ボルトにより締め付けることを特徴とする請求項１に記載の耐震補強金具である。
According to a second aspect of the present invention, the first metal fitting is formed by bending the central portion of the plate material into a substantially U shape so as to fit the horizontal width of the field edge holder, and sandwiching the field edge holder. The notch formed in the lower end portion of the plate member is fitted and held in the field edge, the field edge mounting bolt is screwed to the sheet material and the bolt tip is brought into contact with the field edge and tightened,
The second metal fitting is a substantially U-shape formed so as to straddle the first metal fitting, and is a substantially plate formed so as to straddle the first metal fitting with a stop plate material having bent ribs on both sides. A U-shaped mounting plate material whose end is bent into a re-shaped shape, and a plurality of edge lip mounting bolts penetrating them,
The stop plate material and the mounting plate material are arranged so as to sandwich the field lip portion on one side of the field edge and straddle the plate material of the first metal fitting,
On both sides straddling the plate material, hook the L-shaped end of the mounting plate material to the field lip portion on one side of the field edge, and tighten the stop plate material and the mounting plate material with the plurality of field lip mounting bolts. The seismic reinforcement bracket according to claim 1.
請求項３に記載の発明は、前記第１の金具は、前記板材の下端部には野縁幅の切欠きが、野縁底部まで嵌合するように形成され、
前記切欠きを、前記野縁に嵌合して保持することを特徴とする請求項２に記載の耐震補強金具である。
In the invention according to claim 3, the first metal fitting is formed so that a notch having a field width is fitted to the bottom edge of the field material at the lower end of the plate member.
The seismic reinforcing metal fitting according to claim 2, wherein the notch is fitted and held in the field edge.
請求項４に記載の発明は、前記第１の金具は、前記板材の上部中央部を切り起こして一体で立ち上げた立ち起し部を有し、
前記立ち起し部により前記第２の金具と固定したことを特徴とする請求項２又は請求項３に記載の耐震補強金具である。
The invention according to claim 4 is characterized in that the first metal fitting has a rising portion that is raised up integrally by cutting and raising the upper central portion of the plate member.
The earthquake-proof reinforcing metal fitting according to claim 2 or 3, wherein the metal fitting is fixed to the second metal fitting by the rising portion.
請求項５に記載の発明は、前記取付板材に雌ねじを形成し、座金を介して前記野縁リップ部取付ボルトにより前記取付板材に螺着することを特徴とする請求項２乃至請求項４のいずれか１項に記載の耐震補強金具である。 According to a fifth aspect of the present invention, a female screw is formed on the mounting plate material, and the mounting plate material is screwed to the mounting plate material by the field lip portion mounting bolt via a washer. It is an earthquake-proof reinforcement metal fitting given in any 1 paragraph.
請求項６に記載の発明は、前記第１の金具または前記第２の金具の少なくとも一方に、少なくとも上端片側に側部を切り落とした切り欠き部が形成されていることを特徴とする請求項２乃至請求項５のいずれか１項に記載の耐震補強金具である。 According to a sixth aspect of the present invention, at least one of the first metal fitting or the second metal fitting is formed with a notch portion having a side portion cut off at least on the upper end side. It is a seismic reinforcement metal fitting of any one of thru | or 5.
請求項７に記載の発明は、前記第１の金具または前記第２の金具の少なくとも一方に、斜めブレースを２方向Ｖ型の少なくとも片側に取り付けるためのブレース取付用ボルト孔が開口されていることを特徴とする請求項２乃至請求項６のいずれか１項に記載の耐震補強金具である。 According to a seventh aspect of the present invention, a brace mounting bolt hole for mounting an oblique brace on at least one side of a two-way V-shape is opened in at least one of the first metal fitting or the second metal fitting. The seismic reinforcement metal fitting according to any one of claims 2 to 6, wherein
請求項８に記載の発明は、天井スラブまたは梁を含む建物の構造体から吊持された野縁及び野縁受を備える天井下地構造を前記野縁と前記野縁受の交差部で補強する耐震補強金具の取付方法であって、
第１の金具を前記野縁受に跨るように配置して前記野縁に嵌合させ、地震による前記天井下地構造に生じる衝撃力に対して前記野縁受の軸方向に変位可能に取り付け、
前記第２の金具を、前記野縁の野縁リップ部を挟み、かつ前記第１の金具の前記板材に跨るように配置して前記野縁の野縁リップ部に地震による前記天井下地構造に生じる衝撃力に対して前記野縁の軸方向に変位可能に取り付け、
前記天井下地構造に生じる衝撃力を吸収可能にしたことを特徴とする耐震補強金具の取付方法である。
The invention according to claim 8 reinforces a ceiling foundation structure including a field edge and a field edge suspended from a structure of a building including a ceiling slab or a beam at an intersection of the field edge and the field edge. A method of attaching a seismic reinforcement bracket,
The first metal fitting is arranged so as to straddle the edge guard and is fitted to the edge, and is attached so as to be displaceable in the axial direction of the edge receiver against an impact force generated in the ceiling foundation structure due to an earthquake,
The second metal fitting is disposed so as to sandwich the field edge lip portion of the field edge and straddles the plate material of the first metal fitting, and the field edge lip portion of the field edge is arranged on the ceiling foundation structure due to an earthquake. Attached so as to be displaceable in the axial direction of the field edge against the generated impact force,
A method for attaching a seismic reinforcing metal fitting, characterized in that an impact force generated in the ceiling base structure can be absorbed.
請求項９に記載の発明は、前記第１の金具の板材を前記野縁受に跨るように配置し、前記板材の下部の切り込みを前記野縁に嵌合させ、野縁受取付用ボルトを前記板材に螺着してボルト先端を前記野縁受に当接して締め付け、
前記第２の金具の前記止め板材と前記取付板材とを、前記野縁の片側の野縁リップ部を挟み、かつ前記第１の金具の前記板材に跨るように配置し、
前記板材を跨ぐ両側において、前記野縁の片側の野縁リップ部に前記取付板材のレ型
端部を引っ掛け、
前記止め板材と前記取付板材とを前記複数の野縁リップ部取付ボルトにより締め付けることを特徴とする請求項８に記載の耐震補強金具の取付方法である。
In the invention according to claim 9, the plate member of the first metal fitting is arranged so as to straddle the field edge receiver, the lower notch of the plate material is fitted to the field edge, and the field edge mounting bolt is provided. Screw on the plate and tighten the bolt tip against the edge holder,
The stop plate material and the mounting plate material of the second metal fitting are arranged so as to sandwich the field edge lip portion on one side of the field edge and straddle the plate material of the first metal fitting,
On both sides straddling the plate material, hook the re-shaped end of the mounting plate material to the field lip portion on one side of the field edge,
9. The method of attaching an earthquake-resistant reinforcing bracket according to claim 8, wherein the stopper plate member and the attachment plate member are fastened by the plurality of field lip portion attachment bolts.
請求項１０に記載の発明は、前記第１の金具または前記第２の金具の少なくとも一方に、斜めブレースを２方向Ｖ型の少なくとも片側に取り付けることを特徴とする請求項８又は請求項９に記載の耐震補強金具の取付方法である。 The invention according to claim 10 is characterized in that an oblique brace is attached to at least one side of the two-way V-shape to at least one of the first metal fitting or the second metal fitting. This is a mounting method of the seismic reinforcement bracket described.
前記構成により、この発明は、以下のような効果を有する。 With the above configuration, the present invention has the following effects.
請求項１に記載の発明では、第２の金具と野縁で、第１の金具と野縁受とを閉じた輪として囲い込んで野縁と野縁受の交差部を強固に取付けることができ、また、少ない構成部材で、天井下地の野縁と野縁受の交差部に簡単かつ確実に設置することができる。しかも、第１の金具は、地震による天井下地構造に生じる衝撃力に対して野縁受の軸方向に変位可能であり、第２の金具は、地震による天井下地構造に生じる衝撃力に対して野縁の軸方向に変位可能であり、地震によって天井下地構造に生じる衝撃力に対して天井下地構造が変位して衝撃力を吸収することができ、天井下地構造の耐震性能を向上させることができる。 In the first aspect of the present invention, the first metal fitting and the field edge receiver are enclosed as a closed ring by the second metal fitting and the field edge, and the intersection of the field edge and the field edge reception is firmly attached. In addition, it can be easily and reliably installed at the intersection between the field edge of the ceiling base and the field edge receiver with a small number of components. In addition, the first metal fitting can be displaced in the axial direction of the field receiver against the impact force generated in the ceiling foundation structure due to the earthquake, and the second metal fitting is resistant to the impact force generated in the ceiling foundation structure due to the earthquake. It can be displaced in the axial direction of the field edge, and the ceiling foundation structure can be displaced by the impact force generated in the ceiling foundation structure due to the earthquake to absorb the impact force, improving the earthquake resistance performance of the ceiling foundation structure it can.
請求項２に記載の発明では、野縁と野縁受の交差部で、野縁受に取り付けられる第１の金具と、野縁に取り付けられる第２の金具により構成され、第１の金具の板材を略コの字型に折曲げて野縁受を囲い込み野縁に野縁受を野縁受の軸方向に固定し、第２の金具により野縁受と第１の金具とを抱きかかえるように略コの字型に挟み込み、野縁受を跨いだ両側において野縁の片側の野縁リップ部を取付けることで、第２の金具と野縁で、第１の金具と野縁受とを閉じた輪として囲い込んで野縁と野縁受の交差部を強固に取付けることができる。また、少ない構成部材で、天井下地の野縁と野縁受の交差部に簡単かつ確実に設置し、しかも地震によって天井下地構造に生じる衝撃力に対して天井下地構造が変位して衝撃力を吸収することができ、天井下地構造の耐震性能を向上させることができる。 In invention of Claim 2, it is comprised by the 1st metal fitting attached to a field edge receiver and the 2nd metal fitting attached to a field edge in the crossing part of a field edge and a field edge holder, Fold the plate material into a substantially U-shape, enclose the field guard, fix the field receiver to the field edge in the axial direction, and hold the field receiver and the first metal fitting with the second metal fitting. As shown in the figure above, it is sandwiched between substantially U-shapes, and the field lip part on one side of the field edge is attached on both sides across the field edge, so that the first metal and the field edge are Can be firmly attached at the intersection between the field edge and the field edge. In addition, with a small number of components, it can be installed easily and securely at the intersection of the ceiling edge and the edge of the ceiling edge. It can be absorbed and the seismic performance of the ceiling foundation structure can be improved.
請求項３に記載の発明では、第１の金具は、板材の下端部には野縁幅の切欠きを、野縁の底部まで嵌合して確実に野縁全体を保持することで、野縁が野縁受と直交方向に横すべり移動することを阻止することができる。 In the invention according to claim 3, the first metal fitting is formed by fitting a notch having a field edge width to the lower end portion of the plate material to the bottom part of the field edge to securely hold the entire field edge. It is possible to prevent the edge from sliding sideways in a direction orthogonal to the field edge holder.
請求項４に記載の発明では、第１の金具は、板材の立ち起し部により第２の金具と固定したことで、第１の金具と第２の金具とを一体にすることで施工性が向上する。 In the invention according to claim 4, the first metal fitting is fixed to the second metal fitting by the rising portion of the plate material, so that the first metal fitting and the second metal fitting are integrated into one workability. Will improve.
請求項５に記載の発明では、固定板材に雌ねじを形成し、座金を介して野縁リップ部取付ボルトにより固定板材に螺着して締め付け固定することで、野縁リップ部固定ボルトの友回りを防止でき、野縁リップ部取付ボルトによる締付力が向上する。 According to the fifth aspect of the present invention, a female screw is formed on the fixed plate member, and the fixed plate member is screwed to the fixed plate member with a field lip portion mounting bolt via a washer to be fastened and fixed. And the tightening force by the field lip mounting bolt is improved.
請求項６に記載の発明では、第１の金具または第２の金具の少なくとも一方に、少なくとも上端片側に側部を切り落とした切り欠き部が形成されていることで、第１の金具または第２の金具の軽量化が可能で、材料の削減にもなる。 According to the sixth aspect of the present invention, at least one of the first metal fitting or the second metal fitting is formed with a notch portion with a side portion cut off at least on the upper end side, so that the first metal fitting or the second metal fitting is formed. It is possible to reduce the weight of the metal fittings and reduce the material.
請求項７に記載の発明では、第１の金具または第２の金具の少なくとも一方に、斜めブレースを２方向Ｖ型の少なくとも片側に取り付けるためのブレース取付用ボルト孔が開口されていることで、より効果的にブレースを機能させることで地震力を確実に野縁と天井面材に伝達し、耐震性能を付与することが可能である。 In the invention of claim 7, at least one of the first metal fitting or the second metal fitting is provided with a brace attachment bolt hole for attaching the oblique brace to at least one side of the two-way V-shape. By making the braces function more effectively, it is possible to reliably transmit the seismic force to the field edge and the ceiling surface material and to provide seismic performance.
請求項８に記載の発明では、第２の金具と野縁で、第１の金具と野縁受とを閉じた輪として囲い込んで野縁と野縁受の交差部を強固に取付けることができ、また、少ない構成部材で、天井下地の野縁と野縁受の交差部に簡単かつ確実に設置することができる。しかも、
第１の金具は、地震による天井下地構造に生じる衝撃力に対して野縁受の軸方向に変位可能であり、第２の金具は、地震による天井下地構造に生じる衝撃力に対して野縁の軸方向に変位可能であり、地震によって天井下地構造に生じる衝撃力に対して天井下地構造が変位して衝撃力を吸収することができ、天井下地構造の耐震性能を向上させることができる。
In the invention according to claim 8, it is possible to firmly attach the intersection of the field edge and the field edge by surrounding the first metal element and the field edge with a closed ring by the second metal and the field edge. In addition, it can be easily and reliably installed at the intersection between the field edge of the ceiling base and the field edge receiver with a small number of components. Moreover,
The first metal fitting is displaceable in the axial direction of the field receiver against the impact force generated in the ceiling foundation structure due to the earthquake, and the second metal fitting is the field edge against the impact force generated in the ceiling foundation structure due to the earthquake. The ceiling base structure can be displaced by the impact force generated in the ceiling base structure due to the earthquake to absorb the impact force, and the seismic performance of the ceiling base structure can be improved.
請求項９に記載の発明では、第１の金具の板材を略コの字型に折曲げて野縁受を囲い込み野縁に野縁受を野縁受の軸方向に取付け、第２の金具により野縁受と第１の金具とを抱きかかえるように略コの字型に挟み込み、野縁受を跨いだ両側において野縁の片側の野縁リップ部を締め付けることで、第２の金具と野縁で、第１の金具と野縁受とを閉じた輪として囲い込んで野縁と野縁受の交差部を強固に取付けることができる。また、少ない構成部材で、天井下地の野縁と野縁受の交差部に簡単かつ確実に設置し、しかも地震によって天井下地構造に生じる衝撃力に対して天井下地構造が変位して衝撃力を吸収することができ、天井下地構造の耐震性能を向上させることができる。 In the invention according to claim 9, the plate member of the first metal fitting is bent into a substantially U-shape to enclose the field receiver and the field receiver is attached to the field edge in the axial direction of the field receiver. By sandwiching the field edge holder and the first metal fitting into a substantially U-shape, and tightening the field edge lip on one side of the field edge on both sides across the field edge holder, At the field edge, the first metal fitting and the field edge receiver can be enclosed as a closed ring to firmly attach the intersection between the field edge and the field edge receiver. In addition, with a small number of components, it can be installed easily and securely at the intersection of the ceiling edge and the edge of the ceiling edge. It can be absorbed and the seismic performance of the ceiling foundation structure can be improved.
請求項１０に記載の発明では、第１の金具または第２の金具の少なくとも一方に、斜めブレースを２方向Ｖ型の少なくとも片側に取り付けることで、より効果的にブレースを機能させることで地震力を確実に野縁と天井面材に伝達し、耐震性能を付与することが可能である。 In the invention according to claim 10, the seismic force is obtained by attaching the oblique brace to at least one side of the two-direction V-shape to at least one of the first metal fitting or the second metal fitting, so that the brace functions more effectively. Can be reliably transmitted to the field edge and ceiling surface material to provide seismic performance.
以下、この発明の耐震補強金具及び耐震補強金具の取付方法の実施の形態について説明する。この発明の実施の形態は、発明の最も好ましい形態を示すものであり、この発明はこれに限定されない。 Hereinafter, embodiments of the seismic reinforcing metal fitting and the method of attaching the seismic reinforcing metal fitting according to the present invention will be described. The embodiment of the present invention shows the most preferable mode of the present invention, and the present invention is not limited to this.
（耐震補強金具の構成）
この実施の形態の耐震補強金具の構成を、図１乃至図９に基づいて説明する。図１は在来工法による軽量鉄骨造の天井下地構造の概略を説明するための斜視図、図２は耐震補強金具の取付状態を示す斜視図、図３は第１の金具の斜視図、図４は第２の金具の斜視図、図５乃至図９は耐震補強金具の取付状態を示し、図５は平面図、図６は図５をイ方向から見た図、図７は図５をロ方向から見た図、図８は図５をハ方向から見た図、図９は図５をニ方向から見た図である。
(Structure of seismic reinforcement bracket)
The structure of the seismic reinforcement metal fitting of this embodiment is demonstrated based on FIG. 1 thru | or FIG. FIG. 1 is a perspective view for explaining an outline of a lightweight steel-frame ceiling foundation structure by a conventional construction method, FIG. 2 is a perspective view showing an installation state of a seismic reinforcing metal fitting, and FIG. 3 is a perspective view of a first metal fitting. 4 is a perspective view of the second metal fitting, FIGS. 5 to 9 show the mounting state of the seismic reinforcement metal fitting, FIG. 5 is a plan view, FIG. 6 is a view of FIG. FIG. 8 is a view of FIG. 5 viewed from the direction C, and FIG. 9 is a view of FIG. 5 viewed from the direction D.
この実施の形態の在来工法による軽量鉄骨造の天井下地構造は、図１に示すように、この建物の構造体２０には、天井５０に大型の野縁６を平行に所定幅で複数個配置し、この平行に配置した複数個の野縁６の間にはそれぞれ複数個の小型の野縁７を配置している。この大型の野縁６と小型の野縁７は、同じ高さで、かつ同じ長さになっている。大型の野縁６と小型の野縁７に対して直交する方向に複数個の野縁受８が配置されている。この大型の野縁６と野縁受８とは、クリップ１０で固定され、小型の野縁７と野縁受８とは、クリップ１１で固定されている。 As shown in FIG. 1, a light steel frame ceiling foundation structure according to the conventional method of this embodiment includes a plurality of large-sized field edges 6 parallel to a ceiling 50 and having a predetermined width. A plurality of small field edges 7 are disposed between the plurality of field edges 6 arranged in parallel. The large field edge 6 and the small field edge 7 have the same height and the same length. A plurality of field receivers 8 are arranged in a direction orthogonal to the large field edge 6 and the small field edge 7. The large field edge 6 and field edge receiver 8 are fixed by a clip 10, and the small field edge 7 and field edge receiver 8 are fixed by a clip 11.
野縁受８には、ハンガー１２が所定間隔で固定され、このハンガー１２に吊ボルト５の下部を連結し、吊ボルト５の上部は天井スラブまたは梁を含む建物の構造体２０に連結する。この建物の構造体２０としては、例えば鉄骨造の構造体である。吊ボルト５により吊持された天井下地構造では、野縁６，７と野縁受８は、既存のものが用いられ、鋼材やアルミ合金材などを採用することができるが、それらに限ることなく、在来工法による軽量鉄骨造の天井下地構造に用いられるものであれば、どのような材質からなるものでもよい。 A hanger 12 is fixed to the field edge receiver 8 at a predetermined interval, and the lower part of the suspension bolt 5 is connected to the hanger 12, and the upper part of the suspension bolt 5 is connected to a building structure 20 including a ceiling slab or a beam. The building structure 20 is, for example, a steel structure. In the ceiling foundation structure suspended by the suspension bolt 5, the existing edges 6 and 7 and the edge receiver 8 are used, and steel materials, aluminum alloy materials, etc. can be adopted, but are not limited thereto. However, any material may be used as long as it is used for a lightweight steel-frame ceiling foundation structure by a conventional construction method.
野縁７と野縁受８の交差部には、耐震補強金具Ａが固定され、耐震補強金具Ａは第１の金具１と第２の金具２により構成され、この第１の金具１と第２の金具２は、例えば鋼板などで成形された板材などからなる。第１の金具１には、一対の斜めブレース３０の下部が接続され、一対の斜めブレース３０の上部は、斜め補強取付金物３１に接続されている。第２の金具２には、一対の斜めブレース４０の下部が接続され、一対の斜めブレース４０の上部は、斜め補強取付金物４１に接続されている。一対の斜め補強取付金物３１は、中央に配置された野縁受８の両側に設けられた吊ボルト５に固定され、一方、一対の斜め補強取付金物４１は、両側に配置された野縁受８に設けられた吊ボルト５に固定されている。 A seismic reinforcing metal fitting A is fixed to the intersection of the field edge 7 and the field edge receiver 8, and the seismic reinforcing metal fitting A is composed of a first metal fitting 1 and a second metal fitting 2. The second metal fitting 2 is made of, for example, a plate material formed of a steel plate or the like. A lower part of a pair of diagonal braces 30 is connected to the first metal fitting 1, and an upper part of the pair of diagonal braces 30 is connected to an oblique reinforcing attachment 31. A lower part of a pair of diagonal braces 40 is connected to the second metal fitting 2, and an upper part of the pair of diagonal braces 40 is connected to an oblique reinforcing attachment 41. The pair of diagonal reinforcement mounting hardware 31 is fixed to the suspension bolts 5 provided on both sides of the field edge receiver 8 disposed at the center, while the pair of diagonal reinforcement mounting hardware 41 is disposed on both sides of the field edge receiving metal 41. The suspension bolt 5 is fixed to the suspension bolt 5.
この実施の形態の耐震補強金具Ａは、野縁７と野縁受８の交差部に簡単かつ確実に設置することができ、野縁７と野縁受の交差部を強固に固定するとともに、地震力を、簡便かつ確実に野縁７と天井面材に伝達し、耐震性能を付与することが可能である。さらに、所定の斜めブレース３０，４０を設けることで、より効果的にブレースを機能させることで地震力を確実に野縁７と天井面材に伝達し、耐震性能を付与することが可能である。 The seismic reinforcement bracket A of this embodiment can be easily and reliably installed at the intersection of the field edge 7 and the field edge receiver 8, firmly fixing the intersection of the field edge 7 and the field edge receiver, Seismic force can be easily and reliably transmitted to the field edge 7 and the ceiling surface material to provide seismic performance. Furthermore, by providing the predetermined oblique braces 30 and 40, it is possible to more reliably transmit the seismic force to the field edge 7 and the ceiling surface material by causing the braces to function more effectively and to impart seismic performance. .
斜めブレース３０，４０は、耐震補強金具Ａと隣接する四方で四箇所の吊ボルト５の吊元基端の斜め補強取付金物３１，４１間に斜めに設置し、ブレース材自体は耐震上要求される水平抵抗の分担力が作用した時に座屈しない断面性能を有する既存の型鋼を用いる。吊ボルト５の吊元基端部には、斜め補強取付金物３１，４１として既往のブレース取付金具を使用し、ブレース材をビス止めしてもよい。 The diagonal braces 30 and 40 are installed obliquely between the diagonal reinforcement mounting hardware 31 and 41 at the base end of the suspension bolt 5 in four directions adjacent to the seismic reinforcement bracket A, and the brace material itself is required for earthquake resistance. An existing steel mold having a cross-sectional performance that does not buckle when a horizontal resistance sharing force is applied. At the base end of the suspension bolt 5, the existing brace mounting brackets may be used as the diagonal reinforcement mounting hardware 31, 41, and the brace material may be screwed.
次に、耐震補強金具Ａの詳細構成について、図２乃至図９に基づいて詳細に説明する。耐震補強金具Ａは、野縁７及び野縁受８を備える天井下地構造を補強するものであり、この実施の形態では野縁７と野縁受８の交差部に取り付けられているが、野縁６と野縁受８の交差部に取り付けても良い。耐震補強金具Ａは、第１の金具１と第２の金具２により構成され、第１の金具１は、主に野縁受８に取り付けられ、第２の金具２は主に野縁７に取り付けられる。野縁７は、断面がコ字状であり、基部７ａの両側を屈曲し、この両側の屈曲部７ｂ１，７ｂ２から基部７ａに対して略直角方向に延び、その両端を内側に屈曲して開口７ｃ側に一対の野縁リップ部７ｄ１，７ｄ２が形成されている。野縁受８は、断面がコ字状であり、基部８ａの両側を屈曲し、この両側の屈曲部８ｂ１，８ｂ２から基部８ａに対して略直角方向に延び、開口８ｃ側に一対のフランジ部８ｄ１，８ｄ２が形成されている。野縁７は、その基部７ａを下方にして天井側にし、一対の野縁リップ部７ｄ１，７ｂ２を上側にして配置され、この野縁７の一対の野縁リップ部７ｄ１，７ｂ２に、野縁受８は、そのフランジ部８ｄ２を重ねて配置されている。 Next, the detailed structure of the seismic reinforcement bracket A will be described in detail with reference to FIGS. The seismic reinforcement bracket A reinforces the ceiling foundation structure including the field edge 7 and the field edge receiver 8 and is attached to the intersection of the field edge 7 and the field edge receiver 8 in this embodiment. You may attach to the intersection of the edge 6 and the field edge receiver 8. FIG. The seismic reinforcement metal fitting A is composed of a first metal fitting 1 and a second metal fitting 2. The first metal fitting 1 is mainly attached to the field edge receiver 8, and the second metal fitting 2 is mainly attached to the field edge 7. It is attached. The field edge 7 has a U-shaped cross section, bends both sides of the base portion 7a, extends from the bend portions 7b1 and 7b2 on both sides in a direction substantially perpendicular to the base portion 7a, and bends both ends inward to open. A pair of field lip portions 7d1 and 7d2 are formed on the 7c side. The field receiver 8 has a U-shaped cross section, bends on both sides of the base portion 8a, extends from the bent portions 8b1 and 8b2 on both sides in a direction substantially perpendicular to the base portion 8a, and has a pair of flange portions on the opening 8c side. 8d1 and 8d2 are formed. The field edge 7 is arranged with the base 7a facing downward and the pair of field edge lip parts 7d1 and 7b2 on the upper side, and the field edge 7 has a field edge on the pair of field edge lip parts 7d1 and 7b2. The receptacle 8 is arranged with its flange portion 8d2 overlapped.
第１の金具１は、例えば鋼板などからなる板材の両側部に同じ側から切り込み１ｇ１１，１ｇ２１を入れて中央部を、設置された野縁受８の水平幅に嵌合するように略コの字型に折曲げ、折り曲部１ｂ，１ｃを有している。ここで、略コの字型とは、角をほぼ直角に折り曲げるコの字型、角を緩く折り曲げるＵ字型なども含む。この折り曲部１ｃの一端には、ナット１ｄがねじ孔１ｋの位置に対応させ、このナット１ｄに野縁受取付用ボルト１ｅが螺着して取付られている。第１の金具１は、野縁受８を挟み込んで野縁受取付用ボルト１ｅをナット１dを介してねじ孔１kに螺着し、これによりその先端部１ｅ１が野縁受８の基部８ａを押圧して締め付けられる。折り曲部１ｃに、ねじ孔１ｋを形成し、ナット１ｄを介して野縁受取付用ボルト１ｅを螺着し、野縁受８の基部８ａに取付けることで、第１の金具１を野縁受８に確実に取り付けることができ、かつねじ孔１ｋとナット１ｄの締め付けによって施工した野縁受取付用ボルト１ｅの緩み止めを行うことができる。 The first metal fitting 1 is formed in such a manner that, for example, notches 1g11 and 1g21 are inserted from both sides of a plate material made of, for example, a steel plate, and the center portion is fitted to the horizontal width of the installed field receiver 8. It has a bent shape and has bent portions 1b and 1c. Here, the substantially U-shape includes a U-shape that bends corners substantially at right angles, a U-shape that bends corners loosely, and the like. At one end of the bent portion 1c, a nut 1d is made to correspond to the position of the screw hole 1k, and a field receiving mounting bolt 1e is screwed to the nut 1d. The first metal fitting 1 sandwiches the field receiver 8 and screws the field receiver mounting bolt 1e into the screw hole 1k via the nut 1d, whereby the tip 1e1 attaches the base 8a of the field receiver 8 to the first metal fitting 1. Press and tighten. A screw hole 1k is formed in the bent portion 1c, and a field receiving mounting bolt 1e is screwed through a nut 1d, and is attached to the base 8a of the field receiving 8 so that the first metal fitting 1 is connected to the field edge. It can be securely attached to the receiver 8 and can prevent the loosening of the field receiver mounting bolt 1e constructed by tightening the screw hole 1k and the nut 1d.
第１の金具１の板材の下端部には、野縁幅の切欠き１ｆがあり、この野縁幅の切欠き１ｆは、その両側部１ｆ１，１ｆ２が野縁底部まで嵌合するように形成され、切欠き１ｆを野縁７の一対の野縁リップ部７ｄ１，７ｂ２から野縁７の底部まで嵌合して確実に野縁全体を保持し、略コの字型に折り曲げられた第１の金具１の板材により野縁受８を挟持するとともに、野縁７を野縁受８に野縁受８の軸方向に滑って横移動しないようにする。板材の上部中央部には、一部を残した打ち抜き１ｋによって切り起こし、一体で立ち上げた立ち起し部１ｍが形成され、立ち起し部１ｍにはビス貫通孔１ｎが形成されている。ビス１ｐをビス貫通孔１ｎに貫通し、第２の金具２にねじ込んで固定することで、立ち起し部１ｍにより第２の金具２と固定することができるようになっており、第１の金具１と第２の金具２とを一体にすることで施工性が向上する。また、立ち起し部１ｍは、ビスを用いないで、第２の金具２の止め板材２ａと固定板材２ｄの間に挟みこみなどで固定してもよい。 At the lower end of the plate of the first metal fitting 1, there is a notch having a field width, and the notch 1f having a field width is formed so that both side parts 1f1, 1f2 fit to the field edge bottom. The notches 1f are fitted from the pair of field edge lip portions 7d1 and 7b2 of the field edge 7 to the bottom of the field edge 7 to securely hold the entire field edge and bent into a substantially U-shape. The edge receiver 8 is clamped by the plate material of the metal fitting 1, and the field edge 7 is prevented from sliding laterally to the field receiver 8 in the axial direction of the field receiver 8. In the upper central part of the plate material, a standing part 1m is formed by being cut and raised by a punching 1k that leaves a part, and a standing part 1m is formed with a screw through hole 1n. By passing the screw 1p through the screw through-hole 1n and screwing and fixing it to the second metal fitting 2, it can be fixed to the second metal fitting 2 by the rising portion 1m. The workability is improved by integrating the metal fitting 1 and the second metal fitting 2 together. Moreover, you may fix the raising part 1m by pinching | pinching between the stop board material 2a of the 2nd metal fitting 2 and the fixed board material 2d, without using a screw | thread.
板材の上部の対向する２箇所１ｇ１，１ｇ２には、ブレース取付用ボルト孔１ｈ１，１ｈ２が開口され、ブレース取付用ボルト孔１ｈ１，１ｈ２に、それぞれ斜めブレース３０の下部をあてがいボルト１ｉ１，１ｉ２を貫通させてナット１ｊ１，１ｊ２によって締め付け固定される。板材の上部の対向する２箇所１ｇ１，１ｇ２には、側部を切り落とした切り欠き部１ｇ３１，１ｇ４１が形成されており、この切り欠き部１ｇ３１，１ｇ４１によって第１の金具１の軽量化が可能で、材料の削減にもなり、さらにブレース取付の取付方向の自由度が拡大する。切り欠き部１ｇ３１，１ｇ４１は、曲面状になっているが、直線状などでもよく、切り落としの形状は特に限定されない。 Brace mounting bolt holes 1h1 and 1h2 are opened at two opposing locations 1g1 and 1g2 at the top of the plate material, and bolts 1i1 and 1i2 are passed through the brace mounting bolt holes 1h1 and 1h2, respectively, with the lower part of the oblique brace 30 being passed through. The nuts 1j1 and 1j2 are tightened and fixed. Cutout portions 1g31 and 1g41 with side portions cut off are formed at two opposing locations 1g1 and 1g2 at the top of the plate material, and the weight of the first metal fitting 1 can be reduced by the cutout portions 1g31 and 1g41. Also, the material can be reduced, and the degree of freedom in the mounting direction of the brace is expanded. The cutout portions 1g31 and 1g41 are curved, but may be linear or the like, and the shape of the cutout is not particularly limited.
図の例では、板材の上部の対向する２箇所１ｇ１，１ｇ２は、切り込み１ｇ１１によって１箇所１ｇ１が折り曲部１ｂ側に位置し野縁受８の基部８ａ側において立ち上がるように形成され、他の１箇所１ｇ２が切り込み１ｇ２１によって折り曲部１ｃ側に位置し野縁受８のフランジ部８ｄ１の先端側において立ち上がるように形成され、野縁受８のフランジ部８ｄ１の幅分の軸をずらして設けられている。また、板材の上部の対向する２箇所１ｇ１，１ｇ２は、１箇所１ｇ１が折り曲部１ｂ側またはフランジ部８ｄ１の先端側に位置し野縁受８の基部８ａ側またはフランジ部８ｄ側において立ち上がるように形成し、他の１箇所１ｇ２も同様に折り曲部１ｂ側またはフランジ部８ｄ１の先端側に位置し野縁受８の基部８ａ側またはフランジ部８ｄ側において立ち上がるように形成し、野縁受８のフランジ部８ｄの幅分の軸をずらさないようにしても良い。この板材の上部の対向する２箇所１ｇ１，１ｇ２の配置位置は、一対の斜めブレース３０の取付位置などによって、野縁受８のフランジ部８ｄの幅分の軸をずらすか、ずらさないようにするかを選択することができる。 In the example of the figure, the two opposite locations 1g1 and 1g2 on the upper part of the plate material are formed so that one location 1g1 is located on the bent portion 1b side and rises on the base 8a side of the field edge 8 by the cut 1g11. One place 1g2 is formed by the notch 1g21 so as to be positioned on the bent portion 1c side and rise at the front end side of the flange portion 8d1 of the field receiver 8, and is provided by shifting the axis corresponding to the width of the flange portion 8d1 of the field receiver 8. It has been. Further, the two opposite locations 1g1 and 1g2 on the upper part of the plate material are such that one location 1g1 is located on the bent portion 1b side or the distal end side of the flange portion 8d1 and rises on the base 8a side or the flange portion 8d side of the field edge receiver 8. Similarly, the other one portion 1g2 is also located on the bent portion 1b side or the distal end side of the flange portion 8d1, and is formed so as to rise on the base portion 8a side or the flange portion 8d side. You may make it not shift the axis | shaft for the width | variety of 8 flange part 8d. The two opposing positions 1g1 and 1g2 on the upper part of the plate material are arranged such that the axis corresponding to the width of the flange portion 8d of the field receiver 8 is shifted or not depending on the mounting position of the pair of oblique braces 30 or the like. Can be selected.
第２の金具２は、第１の金具１に跨るように形成した略コの字型であり、両側部に折曲げリブ２ａ５，２ａ６を有する止め板材２ａと、第１の金具１に跨るように形成した略コの字型であり、端部２ｄ１，２ｄ２がレ型に折曲げられた取付板材２ｄと、１組の座金２ｈ，２ｉと、それらを貫通する１組の野縁リップ部取付ボルト２ｆ，２ｇと、を有する。止め板材２ａと取付板材２ｄとは略同じ形状に形成され、略コの字型とは、角をほぼ直角に切り欠いて第１の金具１に跨るように形成したコの字型、角を緩く切り欠いて第１の金具１に跨るように形成したＵ字型なども含み、止め板材２ａの切り欠部２ａ７より、取付板材２ｄの切り欠部２ｄ７が大きく形成されている。 The second metal fitting 2 is substantially U-shaped so as to straddle the first metal fitting 1 and straddles the first metal fitting 1 and the stop plate material 2a having bent ribs 2a5 and 2a6 on both sides. A mounting plate 2d having end portions 2d1 and 2d2 bent into a ret shape, a pair of washers 2h and 2i, and a pair of field lip portions penetrating them. And bolts 2f and 2g. The stop plate material 2a and the mounting plate material 2d are formed in substantially the same shape, and the substantially U-shape is a U-shape formed so as to straddle the first metal fitting 1 by cutting out the corner at a substantially right angle. Including a U-shape formed so as to be loosely cut and straddling the first metal fitting 1, the cutout portion 2d7 of the mounting plate material 2d is formed larger than the cutout portion 2a7 of the stop plate material 2a.
止め板材２ａは、両側部の折曲げリブ２ａ５，２ａ６によって曲げ強度が向上している。この止め板材２ａは、切り欠部２ａ７によって板材上部に対向する２箇所２ａ１，２ａ２を有し、この２箇所２ａ１，２ａ２にはブレース取付用ボルト孔２ａ３，２ａ４が開口され、またブレース取付用ボルト孔２ａ３，２ａ４より下方位置にボルト貫通孔２ａ８，２ａ９が開口され、切り欠部２ａ７の上部中央位置にはビス孔２ａ１０が開口されている。止め板材２ａには、両上側部を切り落とした切り欠き部２ａ１０，２ａ１１が形成されており、この切り欠き部２ａ１０，２ａ１１によって止め板材２ａの軽量化が可能で、材料の削減にもなる。切り欠き部２ａ１０，２ａ１１は、曲面状になっているが、直線状などでもよく、切り落としの形状は特に限定されない。 The fastening plate material 2a is improved in bending strength by the bending ribs 2a5 and 2a6 on both sides. This retaining plate material 2a has two locations 2a1, 2a2 facing the upper portion of the plate material by a notch 2a7, and brace mounting bolt holes 2a3, 2a4 are opened at these two locations 2a1, 2a2, and brace mounting bolts are also provided. Bolt through-holes 2a8 and 2a9 are opened at positions below the holes 2a3 and 2a4, and a screw hole 2a10 is opened at the upper center position of the notch 2a7. The stop plate material 2a is formed with cutout portions 2a10 and 2a11 with both upper side portions cut off. The cutout portions 2a10 and 2a11 can reduce the weight of the stop plate material 2a, and also reduce the material. The cutout portions 2a10 and 2a11 are curved, but may be linear or the like, and the shape of the cutout is not particularly limited.
取付板材２ｄは、切り欠部２ｄ７によって板材上部に対向する２箇所２ｄ１，２ｄ２を有し、またブレース取付用ボルト孔２ｄ３，２ｄ４が開口され、ブレース取付用ボルト孔２ｄ３，２ｄ４より下方位置に雌ねじ孔２ｄ８，２ｄ９が開口されている。取付板材２ｄのレ型端部には、下側の一部を残して打ち抜き、レ型に折曲げられた引っ掛け部２ｄ１０、２ｄ１１が形成されている。取付板材２ｄには、両上側部を切り落とした切り欠き部２ｄ１２，２ｄ１３が形成されており、この切り欠き部２ｄ１２，２ｄ１３によって取付板材２ｄの軽量化が可能で、材料の削減にもなり、さらにブレース取付の取付方向の自由度が拡大する。切り欠き部２ｄ１２，２ｄ１３は、曲面状になっているが、直線状などでもよく、切り落としの形状は特に限定されない。 The mounting plate 2d has two locations 2d1, 2d2 facing the upper portion of the plate by the notch 2d7, and the brace mounting bolt holes 2d3, 2d4 are opened, and the female screw is positioned below the brace mounting bolt holes 2d3, 2d4. Holes 2d8 and 2d9 are opened. Hooks 2d10 and 2d11 are formed on the end of the mounting plate member 2d by punching out a part of the lower side and bending it into a mold. The mounting plate material 2d is formed with notches 2d12 and 2d13 with both upper side portions cut off, and the notch portions 2d12 and 2d13 can reduce the weight of the mounting plate material 2d. The degree of freedom in the mounting direction of the brace is expanded. The cutout portions 2d12 and 2d13 are curved, but may be linear or the like, and the shape of the cutout is not particularly limited.
１組の座金２ｈ，２ｉは、取付板材２ｄの２箇所２ｄ１，２ｄ２と略同じ幅の四角形状に形成され、２箇所２ｄ１，２ｄ２との接触面積を大きくし、１組の野縁リップ部固定ボルト２ｆ，２ｇによる締付力を大きくしている。この１組の座金２ｈ，２ｉは、円形状でもよい。また、取付板材２ｄに雌ねじ孔２ｄ８，２ｄ９を形成することで、雌ねじ孔２ｄ８，２ｄ９に座金２ｈ，２ｉを通した野縁リップ部取付ボルト２ｆ，２ｇを螺着し、ナット２r,2sにより締付することで、作業時の友回りがなく、作業性を向上させることができる。また、雌ねじ孔２ｄ８，２ｄ９と、座金２ｈ，２ｉとによって１組の野縁リップ部取付ボルト２ｆ，２ｇによる締付力を大きくすることができる。 One set of washers 2h, 2i is formed in a square shape having substantially the same width as the two locations 2d1, 2d2 of the mounting plate 2d, and the contact area between the two locations 2d1, 2d2 is increased to fix a set of field lip portions. The tightening force by the bolts 2f and 2g is increased. The set of washers 2h and 2i may be circular. Further, by forming female screw holes 2d8 and 2d9 in the mounting plate member 2d, the field lip portion mounting bolts 2f and 2g through the washers 2h and 2i are screwed into the female screw holes 2d8 and 2d9, and tightened by the nuts 2r and 2s. By attaching, there is no friendship at the time of work, and workability can be improved. Further, the tightening force by the pair of field lip mounting bolts 2f and 2g can be increased by the female screw holes 2d8 and 2d9 and the washers 2h and 2i.
第２の金具２は、止め板材２ａを切り欠部２ａ７によって第１の金具１の板材の中央部に跨るように配置し、２ヶ所の下端部を野縁７の片側のリップ部７ｄ１の外側に当てがい、同様に取付板材２ｄを切り欠部２ｄ７によって第１の金具１の板材の中央部に跨るように配置し、２ヶ所の下端部を、下方の片側の野縁リップ部７ｄ１の内側に配置し、取付板材２ｄのレ型端部を引っ掛けて挟み込んで配置する。取付板材２ｄの板材の中央部を跨ぐ両側に１組の座金２ｈ，２ｉを当てがい、１組の野縁リップ部取付ボルト２ｆ，２ｇを雌ねじ孔２ｄ８，２ｄ９に螺着し、止め板材２ａの雌ねじ孔２ｄ８，２ｄ９から突出する１組の野縁リップ部取付ボルト２ｆ，２ｇにナット２ｒ，２ｓを螺着して締め付ける。
斜めブレース４０の下部は、止め板材２ａの上部と、取付板材２ｄの上部との間に、それぞれ斜めブレース４０の下部の取付部をブレース取付用ボルト孔２ａ３，２ａ４と、ブレース取付用ボルト孔２ｄ３，２ｄ４に当てがい、これらにボルト２ｋ１，２ｋ２を貫通させてナット２ｍ１，２ｍ２によって締め付け固定される。
The second metal fitting 2 is arranged such that the stop plate material 2a is straddled across the central portion of the plate material of the first metal fitting 1 by the notch 2a7, and the lower end portions of the two locations are outside the lip portion 7d1 on one side of the field edge 7. Similarly, the mounting plate member 2d is arranged so as to straddle the center portion of the plate member of the first metal fitting 1 by the notch portion 2d7, and the lower end portions of the two places are located inside the lower edge lip portion 7d1 on the lower side. And the end of the mounting plate 2d is hooked and placed. A set of washers 2h, 2i is applied to both sides of the mounting plate 2d across the center of the plate, and a set of field lip mounting bolts 2f, 2g are screwed into the female screw holes 2d8, 2d9, and the fixing plate 2a The nuts 2r and 2s are screwed onto the pair of field lip mounting bolts 2f and 2g protruding from the female screw holes 2d8 and 2d9, and tightened.
The lower part of the diagonal brace 40 is between the upper part of the retaining plate member 2a and the upper part of the mounting plate member 2d, and the lower mounting part of the diagonal brace 40 is connected to the brace mounting bolt holes 2a3 and 2a4 and the brace mounting bolt hole 2d3. , 2d4, bolts 2k1, 2k2 are passed through them, and are fastened and fixed by nuts 2m1, 2m2.
この実施の形態の耐震補強金具Ａは、野縁７と野縁受８の交差部で、主に野縁受８に取り付けられる第１の金具１と、主に野縁７に取り付けられる第２の金具２により構成され、少ない構成部材でより効果的に斜めブレース３０，４０を機能させることで地震力を確実に野縁７と天井面材に伝達し、耐震性能を付与することが可能である。 The seismic reinforcement metal fitting A of this embodiment is a first metal fitting 1 mainly attached to the field edge receiver 8 and a second object mainly attached to the field edge 7 at the intersection of the field edge 7 and the field edge receiver 8. The seismic force can be reliably transmitted to the field edge 7 and the ceiling surface material by making the diagonal braces 30 and 40 function more effectively with a small number of components, and it is possible to impart seismic performance. is there.
この耐震補強金具Ａの取付方法は、野縁７と野縁受８の交差部において、第１の金具１の板材の中央部を野縁受８に跨るように乗せ、板材の下部の切り込み１ｆを野縁７の一対の野縁リップ部７ｄ１，７ｂ２に嵌合させ、野縁受固定用ボルト１ｅを締め付け、野縁受８に固定する。野縁受固定用ボルト１ｅの位置は、野縁受８の基部８ａを締め付ける位置とすることが強度的に有利である。 The method of attaching the seismic reinforcement metal fitting A is to place the central part of the plate material of the first metal fitting 1 across the field edge receiver 8 at the intersection of the field edge 7 and the field edge receiver 8, and cut the bottom cut 1f of the plate material. Are fitted to the pair of field lip portions 7 d 1 and 7 b 2 of the field edge 7, and the field receiver fixing bolt 1 e is tightened to fix it to the field receiver 8. It is advantageous in terms of strength that the position of the field edge fixing bolt 1e is a position where the base 8a of the field edge receiver 8 is fastened.
次に、第２の金具２の止め板材２ａを野縁受８と直交する方向に野縁受８に取り付けられた第１の金具１の板材を跨ぐように配置し、同様に取付板材２ｄを野縁受８と直交する方向に野縁受８に取り付けられた第１の金具１の板材を跨ぐように配置し、第１の金具１の板材を跨ぐ両側において野縁７の片側の野縁リップ部７ｄ１に取付板材２ｄのレ型端部を引っ掛ける。そして、止め板材２ａと取付板材２ｄを、１組の野縁リップ部取付ボルト２ｆ，２ｇにナット２r，２sを螺着して締め付け、野縁７の片側の野縁リップ部７ｄ１と取付板材２ｄのレ型端部を２箇所離れて締めてつぶすことで取り付ける。 Next, the stop plate material 2a of the second metal fitting 2 is arranged so as to straddle the plate material of the first metal fitting 1 attached to the field edge receiver 8 in a direction orthogonal to the field edge receiver 8, and similarly the attachment plate material 2d It arrange | positions so that the board | plate material of the 1st metal fitting 1 attached to the field edge receptacle 8 in the direction orthogonal to the field edge receptacle 8 may be straddled, and the field edge of the one side of the field edge 7 may be straddled across the board | plate material of the 1st metal fitting 1 The lip end of the mounting plate 2d is hooked on the lip 7d1. Then, the fastening plate material 2a and the mounting plate material 2d are tightened by screwing nuts 2r and 2s onto a pair of field lip portion mounting bolts 2f and 2g, and the field lip portion 7d1 on one side of the field edge 7 and the mounting plate material 2d. Attach by pressing and crushing the two ends of the mold.
第１の金具１と第２の金具２は、野縁７及び野縁受８に固定後に第１の金具１の中央部と第２の金具２の中央部とをビス１ｐによって固定して一体化している。また、予め第１の金具１と第２の金具２は、ビス１ｐによって一体化し、野縁７及び野縁受８に固定してもよい。このように、第１の金具１と第２の金具２は、野縁７及び野縁受８に固定後に固定して一体化し、または予め第１の金具１と第２の金具２を一体化することで、第１の金具１と第２の金具２の連結補強効果が向上する。 After the first metal fitting 1 and the second metal fitting 2 are fixed to the field edge 7 and the field edge receiver 8, the central portion of the first metal fitting 1 and the center portion of the second metal fitting 2 are fixed by screws 1p. It has become. Alternatively, the first metal fitting 1 and the second metal fitting 2 may be integrated with the screw 1p in advance and fixed to the field edge 7 and the field edge receiver 8. As described above, the first metal fitting 1 and the second metal fitting 2 are fixed and integrated after being fixed to the field edge 7 and the field edge receiver 8, or the first metal fitting 1 and the second metal fitting 2 are integrated in advance. By doing so, the connection reinforcement effect of the 1st metal fitting 1 and the 2nd metal fitting 2 improves.
このように、この耐震補強金具Ａでは、まず第１の金具１の板材の中央部を、設置された野縁受８を略コの字型に折曲げて保持し、略コの字型に折り曲げられた第１の金具１の板材により野縁受８を挟持するとともに、野縁７を野縁受８に野縁受８の軸方向に滑って横移動しないようにする。第２の金具２の止め板材２ａと、取付板材２ｄとにより野縁受８と第１の金具１の板材とを抱きかかえるように略コの字型に挟み込み、野縁受８を跨いだ両側において止め板材２ａと取付板材２ｄとで挟み込んで１組の野縁リップ部取付ボルト２ｆ，２ｇにナット２r，２sを螺着して締め付け、野縁７の片側の野縁リップ部７ｄ１と取付板材２ｄのレ型端部を２箇所離れて締めつぶすことで取り付ける。これにより、第２の金具２と野縁７で、第１の金具１と野縁受８とを閉じた輪として強固に囲い込んで取付けることができる。 Thus, in this seismic reinforcement metal fitting A, first, the central portion of the plate material of the first metal fitting 1 is held by bending the installed field edge receiver 8 into a substantially U-shape. The bent edge plate 8 is clamped by the bent plate material of the first metal fitting 1 and the edge edge 7 is slid to the edge edge holder 8 in the axial direction of the edge edge holder 8 so as not to move laterally. Both sides of the second bracket 2 are sandwiched between substantially U-shaped so as to hold the field receiver 8 and the first bracket 1 by the retaining plate 2a of the second bracket 2 and the mounting plate 2d. In this case, the nuts 2r and 2s are screwed and tightened to a pair of field lip portion mounting bolts 2f and 2g, sandwiched between the stop plate material 2a and the mounting plate material 2d, and the field lip portion 7d1 on one side of the field edge 7 and the mounting plate material Attach the 2d mold end by crushing it apart at two places. Thus, the first metal fitting 1 and the field edge receiver 8 can be tightly enclosed and attached by the second metal fitting 2 and the field edge 7 as a closed ring.
また、両側から略コの字型の止め板材２ａと、取付板材２ｄとで、野縁７の片側の野縁リップ部７ｄ１を挟み込んで、１組の野縁リップ部取付ボルト２ｆ，２ｇにナット２r，２sを螺着して締め付け、野縁７の片側の野縁リップ部７ｄ１と取付板材２ｄのレ型端部を２箇所離れて締めつぶすことで、止め板材２ａと取付板材２ｄの摩擦力と野縁リップ部７ｄ１を締めつぶす機械的な拘束力を発揮し、斜めブレース３０、４０から生じるせん断力を地震時に確実に受け止めることができる。また、野縁受８の方向のせん断力は、第１の金具１の板材の切欠き１ｆを野縁７の一対の野縁リップ部７ｄ１，７ｂ２に嵌合して保持し、さらに野縁受８を挟み込んで野縁受取付用ボルト１ｅの先端部１ｅ１が野縁受８の基部８ａを押圧して締め付けることで、野縁７に確実に伝達される。 In addition, the substantially U-shaped stop plate material 2a and the mounting plate material 2d from both sides sandwich the field lip portion 7d1 on one side of the field edge 7, and a nut on one set of field lip portion mounting bolts 2f and 2g. 2r and 2s are screwed and tightened, and the frictional force between the stop plate material 2a and the mounting plate material 2d is obtained by tightening the two edge lip portions 7d1 of the field edge 7 and the mold end of the mounting plate material 2d apart from each other. In addition, it exerts a mechanical restraining force that crushes the field lip portion 7d1, and can reliably receive the shearing force generated from the oblique braces 30, 40 during an earthquake. Further, the shearing force in the direction of the field receiver 8 is obtained by fitting and holding the notch 1f of the plate member of the first metal fitting 1 to the pair of field edge lip portions 7d1 and 7b2 of the field edge 7, and further receiving the field receiver. 8 is sandwiched between the distal end portion 1e1 of the field edge receiving mounting bolt 1e and presses and tightens the base portion 8a of the field edge receiver 8, so that the field edge 7 is reliably transmitted.
また、第１の金具１には、斜めブレース３０を２方向Ｖ型に取り付け、第２の金具２には、斜めブレース４０を２方向Ｖ型に取り付けているが、第１の金具１または第２の金具２の少なくとも一方に、ブレースを２方向Ｖ型に取り付けることができる。また、第１の金具１または第２の金具２の少なくとも一方に、斜めブレースを２方向Ｖ型の少なくとも片側に取り付けることができ、より効果的にブレースを機能させることで地震力を確実に野縁と天井面材に伝達し、耐震性能を付与することが可能である。 In addition, the first metal fitting 1 has a diagonal brace 30 attached in a two-way V shape, and the second metal fitting 2 has a diagonal brace 40 attached in a two-way V shape. A brace can be attached to at least one of the two metal fittings 2 in a two-way V shape. In addition, an oblique brace can be attached to at least one side of the two-way V-shape to at least one of the first metal fitting 1 or the second metal fitting 2, and the seismic force can be reliably reduced by functioning the brace more effectively. It can be transmitted to the edge and ceiling material to give seismic performance.
また、耐震補強金具Ａは、野縁７と野縁受８の交差部で、野縁受８に取り付けられる第１の金具１と、野縁７に取り付けられる第２の金具２により構成され、少ない構成部材で、天井下地の野縁７と野縁受８の交差部に簡単かつ確実に設置することができ、野縁７と野縁受の交差部を強固に取り付けるとともに、地震力を、簡便かつ確実に野縁７と天井面材に伝達し、耐震性能を付与することが可能である。さらに、所定の斜めブレース３０，４０を設けることで、より効果的にブレースを機能させることで地震力を確実に野縁７と天井面材に伝達し、耐震性能を付与することが可能である。 In addition, the seismic reinforcement metal fitting A is composed of a first metal fitting 1 attached to the field edge receiver 8 and a second metal fitting 2 attached to the field edge 7 at the intersection of the field edge 7 and the field edge receiver 8. With few components, it can be easily and reliably installed at the intersection of the field edge 7 and the field receiver 8 of the ceiling base, and firmly attach the intersection of the field edge 7 and the field receiver, It is possible to easily and surely transmit to the field edge 7 and the ceiling surface material, and to impart seismic performance. Furthermore, by providing the predetermined oblique braces 30 and 40, it is possible to more reliably transmit the seismic force to the field edge 7 and the ceiling surface material by causing the braces to function more effectively and to impart seismic performance. .
このように、耐震補強金具Ａは、斜めブレース３０，４０に生じる水平地震力に抵抗する力を直接野縁７または、野縁７にビス固定された天井面材（ボード等）に伝達することが必要となるが、第１の金具１と、第２の金具２とからなる少ない構成部材で斜めブレース３０，４０に生じる地震力を、既存天井を存置したまま、簡便かつ確実に野縁と天井面材（ボード等）に伝達し、耐震補強を実現することができる。 Thus, the seismic reinforcement bracket A transmits the force resisting the horizontal seismic force generated in the diagonal braces 30 and 40 directly to the field edge 7 or the ceiling surface material (board or the like) fixed to the field edge 7 by screws. However, the seismic force generated in the oblique braces 30 and 40 with a small number of constituent members including the first metal fitting 1 and the second metal fitting 2 can be easily and reliably maintained at the edge without leaving the existing ceiling. It can be transmitted to ceiling materials (boards, etc.) to achieve seismic reinforcement.
また、野縁方向の荷重に対しては、斜めブレース４０を取付ける第２の金具２の止め板材２ａを野縁７そのものに沿わせて設置し、そのせん断力は野縁７の片側の野縁リップ部７ｄ１に取付板材２ｄのレ型端部を引っ掛けて重なるようにし、両側からコの字型の止め板材２ａと取付板材２ｄで挟み込んで１組の野縁リップ部取付ボルト２ｆ，２ｇにナット２r，２sを螺着して締め付け、野縁７の野縁リップ部７ｄ１と取付板材２ｄのレ型端部を２箇所離れて締めつぶすことで確実に取付けることで得られる材間摩擦力と、締め付け力による野縁７の野縁リップ部７ｄ１のリップ形状を局部的に変形させることによって得られる機械的な拘束力と、野縁７の野縁リップ部７ｄ１のリップ形状の一部に止め板材２ａと一体となったレ型端部を有する取付板材２ｄを止め板材２ａの両側に挟み込んで得られる金具全体の回転変形を拘束する効果を発揮させることで確保し、野縁７自体にビス孔等の欠損を与えないで実現させることができる。 For the load in the field edge direction, the stop plate material 2a of the second metal fitting 2 for attaching the oblique brace 40 is installed along the field edge 7 itself, and the shearing force is applied to the field edge on one side of the field edge 7. The lip end of the mounting plate 2d is hooked on the lip 7d1 so that it overlaps, and is sandwiched between the U-shaped stop plate 2a and the mounting plate 2d from both sides, and nuts are attached to a pair of field lip mounting bolts 2f and 2g. 2r, 2s are screwed and tightened, and the frictional force between the materials obtained by securely mounting the field edge lip portion 7d1 of the field edge 7 and the mold end of the mounting plate material 2d apart from each other; A mechanical restraining force obtained by locally deforming the lip shape of the field lip 7d1 of the field rim 7 by the clamping force, and a stopper plate material on a part of the lip shape of the field lip 7d1 of the field edge 7 Has a re-shaped end united with 2a This can be ensured by exerting the effect of restraining the rotational deformation of the entire metal fitting obtained by sandwiching the mounting plate 2d on both sides of the stop plate 2a, and can be realized without giving a defect such as a screw hole to the field edge 7 itself. .
野縁受８方向の荷重に対しては、野縁受８を第１の金具１の板材により挟み込んで野縁受固定用ボルト１ｅの先端部１ｅ１が野縁受８の基部８ａを押圧して締め付けることで、部材間の摩擦力と回転拘束を得て、合せて第１の金具１を、野縁受８に跨るように乗せ、下部の切欠き１ｆを野縁７の一対の野縁リップ部７ｄ１，７ｂ２に嵌合させて直交する野縁７を嵌め込むことで拘束力を発揮することができる。 With respect to the load in the direction of the field receiver 8, the field receiver 8 is sandwiched between the plate members of the first metal fitting 1, and the front end 1 e 1 of the field receiver fixing bolt 1 e presses the base 8 a of the field receiver 8. By tightening, the frictional force between the members and the rotation constraint are obtained, and the first metal fitting 1 is put on the field edge receiver 8 together, and the lower notch 1f is a pair of field edge lips of the field edge 7. The fitting force can be exerted by fitting the field edges 7 orthogonal to each other by fitting the portions 7d1 and 7b2.
この実施の形態では、斜めブレース３０，４０は、その上端を隣接する吊ボルト５の上部スラブ端基部に既応の一対の斜め補強取付金物３１，４１を利用して取付け、新たなアンカーは必要としない。Ｖ型１対を基本組み合わせで平面ＸＹ両軸方向にそれぞれもしくは、組み合わせて設置して吊ボルト５に圧縮力を与えることなく水平力を負担することができる。この斜めブレース３０，４０は、軸圧縮力により座屈を生じない断面性能を有する既製の形鋼を使用することができる。 In this embodiment, the diagonal braces 30 and 40 are attached to the upper slab end bases of the adjacent suspension bolts 5 using the existing diagonal reinforcement mounting hardware 31 and 41, and a new anchor is required. And not. A pair of V-types can be installed in a basic combination in both directions of the plane XY, or in combination, and a horizontal force can be applied without applying a compressive force to the suspension bolt 5. For the oblique braces 30 and 40, a ready-made shape steel having a cross-sectional performance that does not buckle due to the axial compression force can be used.
また、斜めブレース３０，４０は用いないで、野縁６と野縁受８の交差部に耐震補強金具Ａを備え、耐震補強金具Ａを備えることで天井スラブまたは梁を含む建物の構造体５０から吊ボルトにより吊持された野縁６及び野縁受８を備える天井下地構造を補強することもできる。また、耐震補強金具Ａは、野縁６と野縁受８の交差部で取り付けるようにしているが、野縁７と野縁受８の交差部で取り付けるようにしてもよい。 Further, the diagonal braces 30 and 40 are not used, and a seismic reinforcement bracket A is provided at the intersection of the field edge 6 and the field edge receiver 8, and the structure structure 50 including a ceiling slab or beam is provided by providing the earthquake resistance reinforcement metal A. It is also possible to reinforce the ceiling foundation structure including the field edge 6 and the field edge receiver 8 that are suspended from the suspension bolts. The seismic reinforcement bracket A is attached at the intersection of the field edge 6 and the field edge receiver 8, but may be attached at the intersection of the field edge 7 and the field edge receiver 8.
この耐震補強金具Ａの第１の金具１は、野縁受８に跨るように配置して野縁７に嵌合させ、第２の金具２は、野縁８の野縁リップ部を挟み、かつ第１の金具１に跨るように配置して野縁８の野縁リップ部に地震による天井下地構造に生じる衝撃力に対して野縁７の軸方向に変位可能に取り付け、天井下地構造に生じる衝撃力を吸収可能に構成している。このように耐震補強金具Ａは、第２の金具２と野縁７で、第１の金具１と野縁受８とを閉じた輪として囲い込んで野縁７と野縁受８の交差部を強固に取付けることができ、しかも、第１の金具１は、野縁受８に跨るように配置して野縁７に嵌合させ、第２の金具２は、野縁８の野縁リップ部を挟み、これによって地震による天井下地構造に生じる衝撃力に対して、第１の金具１は野縁受８の軸方向に変位し、第２の金具２は、野縁７の軸方向に変位し、図１０に示すように、衝撃力（エネルギー）を吸収することができ、天井下地構造の耐震性能を向上させることができる。すなわち、図１０（a）は第２の金具２を野縁８の野縁リップ部にビスで固定した場合の衝撃力（エネルギー）を吸収し、図１０（ｂ）は第２の金具２を野縁８の野縁リップ部に挟み固定した場合の衝撃力（エネルギー）を吸収したが、図１０（ｂ）の場合は、第２の金具２と野縁８の野縁リップ部とがスベリ変位することで、図１０（a）の場合と比較して大きな衝撃力（エネルギー）を吸収することができる。 The first metal fitting 1 of the seismic reinforcement metal fitting A is arranged so as to straddle the field edge receiver 8 and is fitted to the field edge 7, and the second metal fitting 2 sandwiches the field edge lip portion of the field edge 8, And it is arranged so as to straddle the first metal fitting 1 and is attached to the field lip portion of the field edge 8 so as to be displaceable in the axial direction of the field edge 7 with respect to the impact force generated in the ceiling foundation structure due to the earthquake. The generated impact force can be absorbed. In this way, the seismic reinforcement metal fitting A includes the second metal fitting 2 and the field edge 7 so as to surround the first metal fitting 1 and the field edge receiver 8 as a closed ring, and the intersection of the field edge 7 and the field edge receiver 8. The first metal fitting 1 is disposed so as to straddle the field receiver 8 and is fitted to the field edge 7, and the second metal fitting 2 is a field edge lip of the field edge 8. The first metal fitting 1 is displaced in the axial direction of the field receiver 8 and the second metal fitting 2 is arranged in the axial direction of the field edge 7 with respect to the impact force generated in the ceiling base structure due to the earthquake. As shown in FIG. 10, the impact force (energy) can be absorbed and the seismic performance of the ceiling foundation structure can be improved. That is, FIG. 10 (a) absorbs the impact force (energy) when the second metal fitting 2 is fixed to the field lip portion of the field edge 8 with screws, and FIG. 10 (b) shows the second metal fitting 2 attached. Although the impact force (energy) when sandwiched and fixed to the field lip portion of the field edge 8 is absorbed, in the case of FIG. 10B, the second metal fitting 2 and the field edge lip portion of the field edge 8 are slippery. By displacing, it is possible to absorb a larger impact force (energy) than in the case of FIG.
この耐震補強金具Ａの天井下地構造に生じる衝撃力（エネルギー）の吸収を、図１１および図１２の実施例の実験例と、図１３及び図１４の比較例の実験例と比較して説明する。図１１および図１２の実施例の実験例は、図１乃至図９に示す耐震補強金具Ａを用いた天井を模擬した試験体にエルセントロ３Ｄ地震波３００％を入力し、天井の慣性力と変位との関係を測定した結果を示し、図１３及び図１４の比較例の実験例は、従来の耐震補強金具を用いた天井を模擬した試験体にエルセントロ３Ｄ地震波３００％を入力し、天井の慣性力と変位との関係を測定した結果を示す。エルセントロ地震波は、１９４０年、米国カリフォルニア州で発生したマグニチュード７．１の大規模な地震の時にエルセントロの観測所で記録された観測波のことであり、３Ｄとは三次元を意味し、平面状の南北方向、東西方向の２方向、高さ方向の振動を行っていることを意味し、３００％とは観測波の加速度（エネルギー）の３倍を意味している。図１１乃至図１４において、Ｘ方向は、野縁の軸方向を示し、Ｙ方向は、野縁受の軸方向を示す。 The absorption of impact force (energy) generated in the ceiling foundation structure of the seismic reinforcement bracket A will be described in comparison with the experimental example of the embodiment of FIGS. 11 and 12 and the experimental example of the comparative example of FIGS. . The experimental example of the embodiment of FIG. 11 and FIG. 12 is a case where an El Centro 3D seismic wave 300% is input to a test body simulating a ceiling using the seismic reinforcement bracket A shown in FIGS. FIG. 13 and FIG. 14 show an experimental example in which a 300% El Centro 3D seismic wave is input to a test body simulating a ceiling using a conventional seismic reinforcement bracket, and the inertial force of the ceiling is shown. The result of measuring the relationship between and displacement is shown. The El Centro Seismic Wave is an observation wave recorded at the El Centro Observatory at the time of a large-scale earthquake of magnitude 7.1 that occurred in California in the United States in 1940. 3D means three-dimensional, planar This means that the vibrations are in the north-south direction, the east-west direction, and the height direction, and 300% means three times the acceleration (energy) of the observed wave. 11 to 14, the X direction indicates the axial direction of the field edge, and the Y direction indicates the axial direction of the field edge receiver.
天井を模擬した試験体の天井構造は、天井面は、下地板に貼り紙や塗装等の細工をして仕上がっており、下地板は、石膏やセメントやロックウール（非結晶ガラス質繊維）でできた板で、実験では一番重い石膏ボードを使用した。下地板の取付は、建物を支える骨組み（躯体）へ、薄型軽量の直線鋼製材（野縁や野縁受）と吊り材を使用して行った。 The ceiling structure of the test specimen simulating the ceiling is finished by crafting paper or painting on the base plate, and the base plate can be made of gypsum, cement, or rock wool (amorphous glassy fiber). The heaviest gypsum board was used in the experiment. The base plate was attached to the framework (frame) that supports the building using thin and light straight steel lumber (field edge and field edge) and suspension material.
この下地板の取付順序は、
第１に、まず、石膏ボードに野縁といわれる直線鋼製材をビスで止め、
第２に、その野縁を野縁受で直角方向にクリップ止めし、
第３に、その野縁受は、ハンガーにより吊り材に取付けられ、
第４に、吊り材の上部は躯体に緊結されている。
The mounting order of this base plate is
First, first of all, straight steel lumber, which is said to be a field edge, is fixed to the plaster board with screws.
Second, clip the field edge in the right-angle direction with a field edge,
Thirdly, the field receiver is attached to the hanger by a hanger,
Fourth, the upper part of the suspension member is tightly coupled to the housing.
なお、施工するときは順序が逆である。
この天井を模擬した試験体の天井構造に、実施例の耐震補強金具を取り付け、天井面のゆれを防止するため斜材を設けた。
In addition, when constructing, the order is reversed.
The seismic reinforcement bracket of the example was attached to the ceiling structure of the test body simulating this ceiling, and diagonal materials were provided to prevent the ceiling surface from shaking.
従来の耐震補強金具は、第１の部品を野縁に対して、両側から挟み込んで取り付け、 これに斜材を付けることにより野縁方向の地震のゆれに直接対抗させた。次に、第１の部品に直交させた第２の部品で、野縁受を包むように配し、天井ボードにビスで直接取付けられている野縁に対して跨ぐように嵌合させて取り付けた。この第２の部品に、斜材を付けることにより野縁受け方向の地震のゆれに直接対抗させた。 The conventional seismic reinforcement metal fittings were attached by sandwiching the first part from both sides to the field edge, and by attaching diagonal materials to it, it directly countered the earthquake movement in the field edge direction. Next, with the second part orthogonal to the first part, it was placed so as to wrap the field edge holder, and fitted so as to straddle the field edge directly attached to the ceiling board with screws. . This second part was directly countered by the seismic vibration in the field receiving direction by attaching diagonal materials.
図１１および図１２の実施例の実験例と、図１３及び図１４の比較例の実験例とにおいて、波形の傾きが剛性を表しており、実施例の実験例は、比較例の実験例に対して剛性すなわち傾きが１０倍〜２０倍と大幅に改善した。また、実施例の実験例は、天井面に生じた最大耐力も、２０００Ｎから４０００Ｎ，６０００Ｎへ、最大では８０００Ｎと、比較例の実験例に対して３倍以上性能が向上した。この実施例の実験例では、第２の金具２と野縁７で、第１の金具１と野縁受８とを閉じた輪として囲い込んで野縁７と野縁受８の交差部を強固に取り付け、しかも、第１の金具１は、野縁受８に跨るように配置して野縁７に嵌合させ、第２の金具２は、野縁８の野縁リップ部を挟み、図１０で説明したように、滑りＸ方向及びＹ方向に変位することで、大きな衝撃力（エネルギー）を吸収することができる。 11 and FIG. 12 and the experimental example of the comparative example of FIG. 13 and FIG. 14, the inclination of the waveform represents the rigidity, and the experimental example of the example is an experimental example of the comparative example. On the other hand, the rigidity, that is, the inclination was greatly improved to 10 to 20 times. In the experimental example, the maximum proof stress generated on the ceiling surface was 2000N to 4000N, 6000N, and the maximum was 8000N. In the experimental example of this embodiment, the second metal fitting 2 and the field edge 7 surround the first metal fitting 1 and the field edge receiver 8 as a closed ring, and the intersection of the field edge 7 and the field edge receiver 8 is formed. The first metal fitting 1 is arranged so as to straddle the field edge receiver 8 and fitted to the field edge 7, and the second metal fitting 2 sandwiches the field edge lip portion of the field edge 8, As described with reference to FIG. 10, a large impact force (energy) can be absorbed by displacing in the sliding X direction and the Y direction.
この発明は、例えば大空間などの既存建物の、在来工法による軽量鉄骨造の天井下地構造に耐震性能を付与することができ、また新築建物の天井下地構造の耐震補強としても適用可能な天井下地材の耐震補強金具及びその取付方法に適用でき、天井下地の野縁と野縁受の交差部に設置し、地震に対して補強すると共に、衝撃力を吸収して耐震性能を付与することが可能である。 The present invention can impart seismic performance to a light steel frame ceiling foundation structure by a conventional construction method in an existing building such as a large space, and can also be applied as an earthquake resistance reinforcement of a ceiling foundation structure of a new building. It can be applied to the base material seismic reinforcement bracket and its mounting method. It is installed at the intersection of the ceiling edge and the edge receiver to reinforce against the earthquake and absorb the impact force to give earthquake resistance performance. Is possible.
Ａ 補強金具
１ 第１の金具
１ｂ，１ｃ 折り曲部
１ｄ ナット
１ｅ 野縁受固定用ボルト
１ｆ 切欠き
２ 第２の金具
２ａ 止め板材
２ｄ 固定板材
２ｆ，２ｇ 野縁リップ部固定ボルト
５ 吊ボルト
６，７ 野縁
７ａ 基部 ７ｂ１，７ｂ２ 屈曲部
７ｃ 開口
７ｄ１，７ｂ２ 野縁リップ部
８ａ 基部
８ｂ１，８ｂ２ 屈曲部
８ｃ 開口
８ｄ１，８ｄ２ フランジ部
２０ 構造体
３０ 斜めブレース
３１ 斜め補強取付金物
４０ 斜めブレース
４１ 斜め補強取付金物
A Reinforcing metal fitting 1 First metal fitting 1b, 1c Bending portion 1d Nut 1e Field edge receiving fixing bolt 1f Notch 2 Second metal fitting 2a Stop plate material 2d Fixing plate material 2f, 2g Field edge lip portion fixing bolt 5 Hanging bolt 6 , 7 Field edge 7a Base part 7b1, 7b2 Bent part 7c Opening 7d1, 7b2 Field edge lip part 8a Base part 8b1, 8b2 Bent part 8c Opening 8d1, 8d2 Flange part 20 Structure 30 Diagonal brace 31 Diagonal bracing 41 Diagonal brace 41 Diagonal brace 41 Reinforcement mounting hardware
Claims (10)
前記野縁受に取り付けられる第１の金具と、前記野縁に取り付けられる第２の金具と、により構成され、
第１の金具は、前記野縁受に跨るように配置して前記野縁に嵌合させ、地震による前記天井下地構造に生じる衝撃力に対して前記野縁受の軸方向に変位可能に取り付け、
前記第２の金具は、前記野縁の野縁リップ部を挟み、かつ前記第１の金具に跨るように配置して前記野縁の野縁リップ部に地震による前記天井下地構造に生じる衝撃力に対して
前記野縁の軸方向に変位可能に取り付け、
前記天井下地構造に生じる衝撃力を吸収可能に構成したことを特徴とする耐震補強金具。 A seismic reinforcement bracket that reinforces a ceiling base structure including a field edge and a field edge suspended from a structure of a building including a ceiling slab or a beam at the intersection of the field edge and the field edge,
A first metal fitting attached to the field edge receiver, and a second metal fitting attached to the field edge,
The first metal fitting is disposed so as to straddle the field edge and is fitted to the field edge, and is attached so as to be displaceable in the axial direction of the field edge with respect to an impact force generated in the ceiling foundation structure due to an earthquake. ,
The second metal fitting is arranged so as to sandwich the field edge lip portion of the field edge and straddle the first metal fitting, and an impact force generated in the ceiling base structure due to an earthquake at the field edge lip portion of the field edge. With respect to the axial direction of the field edge is attached to be displaceable,
A seismic reinforcing metal fitting configured to absorb an impact force generated in the ceiling base structure.
前記第２の金具は、前記第１の金具に跨るように形成した略コの字型であり、両側部に折曲げリブを有する止め板材と、前記第１の金具に跨るように形成した略コの字型であり、端部がレ型に折曲げられた取付板材と、それらを貫通する複数の野縁リップ部取付ボルトと、を有し、
前記止め板材と前記取付板材とを、前記野縁の片側の野縁リップ部を挟み、かつ前記第１の金具の前記板材に跨るように配置し、
前記板材を跨ぐ両側において、前記野縁の片側の野縁リップ部に前記取付板材のレ型端部を引っ掛け、前記止め板材と前記取付板材とを前記複数の野縁リップ部取付ボルトにより締め付けることを特徴とする請求項１に記載の耐震補強金具。 The first metal fitting is formed at the lower end portion of the plate material by bending the central portion of the plate material into a substantially U-shape so as to fit the horizontal width of the field receptacle and sandwiching the field receptacle. Fitting and holding the notch to the field edge, screwing the field edge fixing bolt to the plate material, and tightening the bolt tip against the field edge,
The second metal fitting is a substantially U-shape formed so as to straddle the first metal fitting, and is a substantially plate formed so as to straddle the first metal fitting with a stop plate material having bent ribs on both sides. A U-shaped mounting plate material whose end is bent into a re-shaped shape, and a plurality of edge lip mounting bolts penetrating them,
The stop plate material and the mounting plate material are arranged so as to sandwich the field lip portion on one side of the field edge and straddle the plate material of the first metal fitting,
On both sides straddling the plate material, hook the L-shaped end of the mounting plate material to the field lip portion on one side of the field edge, and tighten the stop plate material and the mounting plate material with the plurality of field lip mounting bolts. The earthquake-proof reinforcement metal fitting according to claim 1 characterized by these.
前記切欠きを、前記野縁に嵌合して保持することを特徴とする請求項２に記載の耐震補強金具。 The first metal fitting is formed so that a notch of a field width is fitted to the bottom edge of the field edge at the lower end of the plate material,
The seismic reinforcement bracket according to claim 2, wherein the notch is fitted and held in the field edge.
前記立ち起し部により前記第２の金具と固定したことを特徴とする請求項２又は請求項３に記載の耐震補強金具。 The first metal fitting has an upright part that is raised up integrally by cutting and raising the upper center part of the plate.
The earthquake-proof reinforcing metal fitting according to claim 2 or 3, wherein the earthquake-proof reinforcing metal fitting is fixed to the second metal fitting by the rising portion.
の少なくとも片側に取り付けるためのブレース取付用ボルト孔が開口されていることを特徴とする請求項２乃至請求項６のいずれか１項に記載の耐震補強金具。 The brace attachment bolt hole for attaching the oblique brace to at least one side of the two-way V shape is opened in at least one of the first metal fitting or the second metal fitting. The earthquake-proof reinforcement metal fitting of any one of claim | item 6.
第１の金具を前記野縁受に跨るように配置して前記野縁に嵌合させ、地震による前記天井下地構造に生じる衝撃力に対して前記野縁受の軸方向に変位可能に取り付け、
前記第２の金具を、前記野縁の野縁リップ部を挟み、かつ前記第１の金具に跨るように配置して前記野縁の野縁リップ部に地震による前記天井下地構造に生じる衝撃力に対して
前記野縁の軸方向に変位可能に取り付け、
前記天井下地構造に生じる衝撃力を吸収可能にしたことを特徴とする耐震補強金具の取付方法。 A method for attaching a seismic reinforcement bracket for reinforcing a ceiling base structure having a field edge and a field edge suspended from a structure of a building including a ceiling slab or a beam at an intersection of the field edge and the field edge. ,
The first metal fitting is arranged so as to straddle the edge guard and is fitted to the edge, and is attached so as to be displaceable in the axial direction of the edge receiver against an impact force generated in the ceiling foundation structure due to an earthquake,
The second metal fitting is arranged so as to sandwich the field edge lip portion of the field edge and straddle the first metal fitting, and the impact force generated in the ceiling base structure due to the earthquake at the field edge lip portion of the field edge With respect to the axial direction of the field edge is attached to be displaceable,
A method for attaching a seismic reinforcing metal fitting characterized in that an impact force generated in the ceiling base structure can be absorbed.
前記野縁に嵌合させ、野縁受取付用ボルトを前記板材に螺着してボルト先端を前記野縁受に当接して締め付け、
前記第２の金具の前記止め板材と前記取付板材とを、前記野縁の片側の野縁リップ部を挟み、かつ前記第１の金具の前記板材に跨るように配置し、
前記板材を跨ぐ両側において、前記野縁の片側の野縁リップ部に前記取付板材のレ型
端部を引っ掛け、
前記止め板材と前記取付板材とを前記複数の野縁リップ部取付ボルトにより締め付けることを特徴とする請求項８に記載の耐震補強金具の取付方法。 The plate material of the first metal fitting is disposed so as to straddle the field edge receiver, the lower notch of the plate material is fitted to the field edge, and the field edge attachment mounting bolt is screwed to the plate material to Abutting and tightening against the edge holder,
The stop plate material and the mounting plate material of the second metal fitting are arranged so as to sandwich the field edge lip portion on one side of the field edge and straddle the plate material of the first metal fitting,
On both sides straddling the plate material, hook the re-shaped end of the mounting plate material to the field lip portion on one side of the field edge,
The method for attaching an earthquake-resistant reinforcing bracket according to claim 8, wherein the stopper plate member and the attachment plate member are fastened by the plurality of field lip portion attachment bolts.
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| JP2017115517A (en) * | 2015-12-25 | 2017-06-29 | 東急建設株式会社 | Aseismic reinforcement fitting, aseismic reinforcing structure for suspended ceiling, and drop-off preventive structure for suspended ceiling |
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| JP5451659B2 (en) * | 2011-01-26 | 2014-03-26 | 大建工業株式会社 | System ceiling bracket |
| JP5610559B1 (en) * | 2014-03-04 | 2014-10-22 | 日本工機株式会社 | Ceiling reinforcement |
| JP6893679B2 (en) * | 2017-01-18 | 2021-06-23 | 八潮建材工業株式会社 | Brace upper end connection fitting, brace lower end connection fitting, and ceiling base structure |
| JP6427220B2 (en) * | 2017-04-18 | 2018-11-21 | 株式会社オクジュー | Ceiling base structure and its construction method |
| KR102564927B1 (en) * | 2020-12-16 | 2023-08-08 | 서울대학교산학협력단 | Friction Damping Device To Improve The Seismic Performance Of The Ceiling System |
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| JPH0319988U (en) * | 1989-07-06 | 1991-02-27 | ||
| JP2003013540A (en) * | 2001-07-02 | 2003-01-15 | Mitsui Fudosan Kk | Ceiling board support structure for system ceiling |
| JP4806239B2 (en) * | 2005-09-09 | 2011-11-02 | 株式会社桐井製作所 | Reinforcement bracket for suspended ceiling |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017115517A (en) * | 2015-12-25 | 2017-06-29 | 東急建設株式会社 | Aseismic reinforcement fitting, aseismic reinforcing structure for suspended ceiling, and drop-off preventive structure for suspended ceiling |
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